Stool with white tractor seat

Vintage design stool from the late seventies / early eighties. The stool has a tractor seat as a sitting area and is designed in the style of Achille and Pier Giacomo Castiglioni. The condition is reasonable, there are clear signs of use visible, see the detailed pictures. The dimensions are 44 cm wide, 34.5 cm deep and 48 cm height.